As Jessica pointed out in the tweet, the photos were taken during a celebration for Eric’s 33rd birthday on September 19.

In addition her Weight Watchers campaign - which, judging by these photos is working - Jessica is serving a Guest Editor on the iVillage blog.

On the site, she talks about raising Maxwell to be an individual, and not just a miniature Jessica Simpson.

"I think that we can easily put expectations on our children just by comparing them to other children,” she writes. “Taking away all the comparisons is a really healthy way to parent -- and not focus on the percentiles and all that kind of stuff.”

The new photos are a big development for Jessica, who previously wouldn’t let cameras linger far below her chin, as demonstrated in her first Weight Watchers ad that started airing last week.